CN110873886B - Abnormity processing method and device of vehicle-mounted positioning system and vehicle-mounted terminal - Google Patents
Abnormity processing method and device of vehicle-mounted positioning system and vehicle-mounted terminal Download PDFInfo
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- CN110873886B CN110873886B CN201811015667.3A CN201811015667A CN110873886B CN 110873886 B CN110873886 B CN 110873886B CN 201811015667 A CN201811015667 A CN 201811015667A CN 110873886 B CN110873886 B CN 110873886B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
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Abstract
The invention discloses an exception handling method and device for a vehicle-mounted positioning system and a vehicle-mounted terminal, wherein the method comprises the following steps: receiving positioning information; determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when the positioning information is determined to be abnormal, wherein the abnormal type comprises a first abnormal type and a second abnormal type; when the positioning information is of a first abnormal type, restarting the positioning service of the system after a first preset time length; or directly restarting the positioning service of the system when the positioning information is of the second abnormal type. According to the abnormity processing method and device for the vehicle-mounted positioning system and the vehicle-mounted terminal, whether the received positioning information is abnormal or not is determined by receiving the positioning information, the abnormal type of the positioning information is further determined when the positioning information is determined to be abnormal, corresponding processing is carried out according to different abnormal types, the phenomenon of abnormal positioning information is solved, manual operation of a user is not needed, and convenience and effectiveness are achieved.
Description
Technical Field
The invention relates to the technical field of information processing, in particular to an exception handling method and device for a vehicle-mounted positioning system and a vehicle-mounted terminal.
Background
With the continuous progress of science and technology, more and more vehicles are provided with vehicle-mounted positioning systems, so that a user can be helped to conveniently position the vehicle, and the functions of navigation, theft prevention and the like are realized. However, when the vehicle-mounted positioning system searches for a satellite for positioning, if an engine or a radio frequency antenna of the vehicle-mounted positioning system has a problem, the satellite cannot be searched for or positioning fails. At this time, the user can only manually restart the positioning application, or manually restart the central control navigation hardware, and even sometimes the vehicle needs to be flamed out and then powered on, so that the operation is complicated, and the user experience is poor.
Disclosure of Invention
The invention provides an exception handling method and device for a vehicle-mounted positioning system, and aims to solve at least one of the technical problems.
The embodiment of the invention provides an exception handling method of a vehicle-mounted positioning system, which comprises the following steps:
receiving positioning information;
determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when the positioning information is determined to be abnormal, wherein the abnormal type comprises a first abnormal type and a second abnormal type, the first abnormal type is that the positioning is unsuccessful and the number of searched satellites is zero, and the second abnormal type is that the positioning is successful and the number of the searched satellites is zero;
when the positioning information is of a first abnormal type, restarting the positioning service of the system after a first preset time length; or
And when the positioning information is of a second abnormal type, directly restarting the positioning service of the system.
Optionally, receiving the positioning information includes:
acquiring satellite information through a positioning chip;
analyzing positioning information corresponding to the satellite information through a positioning engine;
receiving the positioning information through a system framework layer.
Optionally, the method further comprises:
after the positioning service of the system is restarted after a first preset duration, judging whether the abnormity of the positioning information is successfully processed;
and if the abnormal processing of the positioning information is not successful, restarting the driving of the positioning engine after a second preset time length.
Optionally, the method further comprises:
after the positioning service of the system is directly restarted, judging whether the abnormity of the positioning information is successfully processed;
and if the exception processing of the positioning information is not successful, directly restarting the driving of the positioning engine.
Optionally, the method further comprises:
calling the system framework layer through a system interface before searching satellite information through a positioning chip;
calling an interface of the positioning engine through the system framework layer to start the positioning engine;
and sending a satellite searching instruction to the positioning chip through the positioning engine so that the positioning chip acquires the satellite information according to the satellite searching instruction.
Another embodiment of the present invention provides an abnormality processing apparatus for a vehicle-mounted positioning system, including:
the receiving module is used for receiving positioning information;
the determining module is used for determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when the positioning information is determined to be abnormal, wherein the abnormal type comprises a first abnormal type and a second abnormal type, the first abnormal type is unsuccessful in positioning and zero in the number of searched satellites, and the second abnormal type is successful in positioning and zero in the number of searched satellites;
the first processing module is used for restarting the positioning service of the system after a first preset time when the positioning information is of a first abnormal type;
and the second processing module is used for directly restarting the positioning service of the system when the positioning information is of a second abnormal type.
Optionally, the receiving module is configured to:
acquiring satellite information through a positioning chip;
analyzing positioning information corresponding to the satellite information through a positioning engine;
receiving the positioning information through a system framework layer.
Optionally, the first processing module is further configured to:
after the positioning service of the system is restarted after a first preset duration, judging whether the abnormity of the positioning information is successfully processed;
and if the abnormal processing of the positioning information is not successful, restarting the driving of the positioning engine after a second preset time length.
Optionally, the second processing module is further configured to:
after the positioning service of the system is directly restarted, judging whether the abnormity of the positioning information is successfully processed;
and if the exception processing of the positioning information is not successful, directly restarting the driving of the positioning engine.
Optionally, the apparatus further comprises:
the starting module is used for calling the system framework layer through a system interface before searching satellite information through a positioning chip, calling the interface of the positioning engine through the system framework layer to start the positioning engine, and sending a satellite searching instruction to the positioning chip through the positioning engine so that the positioning chip obtains the satellite information according to the satellite searching instruction.
A further embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for processing the exception in the vehicle-mounted positioning system according to the embodiment of the first aspect of the present invention.
Another embodiment of the present invention provides a vehicle-mounted terminal, including a vehicle-mounted positioning system, where the vehicle-mounted positioning system is configured to implement the method for processing the exception of the vehicle-mounted positioning system according to the embodiment of the first aspect.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
whether the received positioning information is abnormal or not is determined by receiving the positioning information, the abnormal type of the positioning information is further determined when the positioning information is determined to be abnormal, corresponding processing is carried out according to different abnormal types, the abnormal phenomenon of the positioning information is solved, manual operation of a user is not needed, convenience and effectiveness are achieved, and the use experience of the user is improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow diagram of an exception handling method for an onboard positioning system in accordance with one embodiment of the present invention;
FIG. 2 is a flow chart of an exception handling method for an onboard positioning system in accordance with another embodiment of the present invention;
FIG. 3 is a flow chart of an exception handling method for an onboard positioning system in accordance with yet another embodiment of the present invention;
fig. 4 is a block diagram showing the configuration of an abnormality processing device of the in-vehicle positioning system according to an embodiment of the present invention;
fig. 5 is a block diagram showing the configuration of an abnormality processing device of an in-vehicle positioning system according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An abnormality processing method, an abnormality processing device, and a vehicle-mounted terminal of a vehicle-mounted positioning system according to an embodiment of the present invention are described below with reference to the drawings.
Fig. 1 is a flowchart of an exception handling method of an in-vehicle positioning system according to an embodiment of the present invention.
As shown in fig. 1, the method for processing the exception of the vehicle-mounted positioning system includes:
s101, positioning information is received.
Most of the existing vehicles are equipped with vehicle-mounted positioning systems, which can help users to conveniently position the vehicle and realize functions of navigation, theft prevention and the like. However, when the vehicle-mounted positioning system searches for a satellite for positioning, if an engine or a radio frequency antenna of the vehicle-mounted positioning system has a problem, the satellite cannot be searched for or positioning fails. At this time, the user can only manually restart the located application program, or manually restart the central control navigation hardware, and even sometimes the vehicle needs to be shut down and then powered on, which is tedious in operation. In order to solve the above problems, the present invention provides an exception handling method for a vehicle-mounted positioning system.
In an embodiment of the present invention, the satellite information may be obtained through the positioning chip, and then the positioning engine may analyze the positioning information corresponding to the satellite information, so as to receive the positioning information through the system framework layer.
Before searching satellite information through the positioning chip, the positioning chip needs to be instructed to search satellites.
Specifically, the system framework layer can be called through the system interface, then the positioning engine can be started through the interface of the positioning engine called by the system framework layer, and then a satellite searching instruction is sent to the positioning chip through the positioning engine, so that the positioning chip can search satellites according to the satellite searching instruction, and satellite information can be acquired.
The following description will be given taking a GPS (Global Positioning System) as an example.
At present, most of vehicle-mounted positioning systems are based on android systems. When an application program in the Android system has a positioning requirement, firstly, a satellite searching and positioning request is initiated through a GPS interface provided by the Android system, an Android Framework is called, then, a GPS engine is started through an interface of the GPS engine, the GPS engine sends the satellite searching and positioning request to a GPS chip, and therefore the GPS chip is triggered to start satellite searching. After that, the GPS chip can be used for searching satellite information, the GPS engine analyzes satellite state information and position information, corresponding information is reported to the application program through the Android Framework, and finally the application program receives the information and carries out subsequent operation.
S102, determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when determining that the positioning information is abnormal.
After receiving the positioning information, it may be determined whether the received positioning information is abnormal. And if the positioning information is abnormal, further determining the abnormal type of the positioning information. The exception types may include two types, a first exception type and a second exception type. The first abnormal type is that the positioning is not successful and the number of searched satellites is zero, and the second abnormal type is that the positioning is successful and the number of searched satellites is zero.
Specifically, the determination of the abnormality type is mainly determined by two conditions, the first condition is whether the positioning is successful, and the second condition is the number of searched satellites.
And when the positioning information is unsuccessfully positioned and the number of the searched satellites is zero, determining that the abnormal type of the positioning information is a first abnormal type.
When the positioning information is successful in positioning but the number of searched satellites is zero, the abnormal type of the positioning information can be determined to be a second abnormal type.
The manner in which different exception types are handled also differs.
S103, when the positioning information is of the first abnormal type, the positioning service of the system is restarted after a first preset time length.
The first preset time period may be preset, for example, 5 minutes. When the positioning information is determined to be of the first abnormal type, that is, when the positioning is unsuccessful, if the number of searched satellites is 0, it cannot be immediately determined that the positioning is abnormal, and the above phenomenon may be caused by the vehicle traveling to an area where satellite signals are relatively poor. Therefore, a period of time, for example, 10 minutes, is required, and if the positioning is still impossible and the number of satellites is 0, the situation of poor signals can be eliminated, and the positioning abnormality can be determined. At this time, the positioning service of the system is restarted to solve the above abnormal problem. For example, in the positioning setting of the android system, on the application level, the system is closed and then opened, so that the restart is realized; or in the positioning setting of a certain APP in the android system, the positioning service of the system can be restarted by closing the APP first and then opening the APP.
And S104, directly restarting the positioning service of the system when the positioning information is of the second abnormal type.
If the positioning information is of a second abnormal type, namely the positioning is successful, but the satellite number is zero, the positioning information is directly determined to be abnormal without waiting, and the positioning service of the system is restarted to solve the problem of abnormal positioning. The restart mode is the same as the previous step, and is not described herein.
According to the abnormity processing method of the vehicle-mounted positioning system, whether the received positioning information is abnormal or not is determined by receiving the positioning information, the abnormal type of the positioning information is further determined when the positioning information is determined to be abnormal, corresponding processing is carried out according to different abnormal types, the phenomenon of abnormal positioning information is solved, manual operation of a user is not needed, convenience and effectiveness are achieved, and the use experience of the user is improved.
As shown in fig. 2, the exception handling method of the vehicle-mounted positioning system may further include:
and S105, after the positioning service of the system is restarted after the first preset time, judging whether the abnormity of the positioning information is successfully processed.
And S106, if the exception handling of the positioning information is not successful, restarting the driving of the positioning engine after a second preset time length.
Continuing with the above example, if the positioning service of the system is restarted, positioning still cannot be performed, and the satellite is 0, then the GPS cannot be restarted only from the application layer, and the GPS needs to be restarted from the underlying driver layer. Since the GPS engine is loaded with the modem (driver), the modem of the GPS engine can be restarted, so that the GPS system is reloaded once, thereby solving the problem of positioning information abnormality. And a dual abnormal recovery mechanism is adopted to ensure the normal work of the GPS.
As shown in fig. 3, the method for processing an exception of the vehicle-mounted positioning system may further include:
s107, after the positioning service of the system is directly restarted, whether the processing of the abnormity of the positioning information is successful is judged.
And S108, if the exception processing of the positioning information is not successful, directly restarting the driving of the positioning engine.
Continuing with the above example, if the positioning information is still capable of positioning after the positioning application is restarted, but the satellite is 0, the GPS can be restarted from the underlying driving layer in the same manner as in the previous embodiment to solve the problem of abnormal positioning information. And a dual abnormal recovery mechanism is adopted to ensure the normal work of the GPS.
In order to implement the foregoing embodiment, the present invention further provides an exception handling apparatus for a vehicle-mounted positioning system, and fig. 4 is a block diagram illustrating a structure of an exception handling apparatus for a vehicle-mounted positioning system according to an embodiment of the present invention, and as shown in fig. 4, the apparatus includes a receiving module 410, a determining module 420, a first processing module 430, and a second processing module 440.
The receiving module 410 is configured to receive positioning information.
The determining module 420 is configured to determine whether the received positioning information is abnormal, and further determine an abnormal type of the positioning information when it is determined that the positioning information is abnormal. Wherein the exception types include a first exception type and a second exception type. The first abnormal type is that the positioning is not successful and the number of searched satellites is zero, and the second abnormal type is that the positioning is successful and the number of searched satellites is zero.
The first processing module 430 is configured to restart the location service of the system after a first preset duration when the location information is of the first abnormal type.
And a second processing module 440, configured to directly restart the location service of the system when the location information is of the second exception type.
It should be noted that the foregoing explanation of the exception handling method for the vehicle-mounted positioning system is also applicable to the exception handling apparatus for the vehicle-mounted positioning system in the embodiment of the present invention, and details not disclosed in the embodiment of the present invention are not repeated herein.
According to the abnormity processing device of the vehicle-mounted positioning system, whether the received positioning information is abnormal or not is determined by receiving the positioning information, the abnormal type of the positioning information is further determined when the positioning information is determined to be abnormal, corresponding processing is carried out according to different abnormal types, the phenomenon of abnormal positioning information is solved, manual operation of a user is not needed, convenience and effectiveness are achieved, and the use experience of the user is improved.
As shown in fig. 5, the exception handling apparatus of the on-board positioning system may further include a starting module 450.
The starting module 450 is configured to, before the positioning chip searches for the satellite information, invoke the system framework layer through the system interface, invoke the interface of the positioning engine through the system framework layer to start the positioning engine, and send a satellite search instruction to the positioning chip through the positioning engine, so that the positioning chip obtains the satellite information according to the satellite search instruction.
In order to implement the embodiment, the invention further provides a vehicle-mounted terminal.
The vehicle-mounted terminal comprises a vehicle-mounted positioning system, and the vehicle-mounted positioning system is used for implementing the exception handling method of the vehicle-mounted positioning system in the embodiment of the first aspect of the invention.
In order to implement the foregoing embodiments, the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the exception handling method of the vehicle-mounted positioning system according to the embodiment of the first aspect of the present invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a random access memory (ram), a read-only memory (rom), an erasable programmable read-only memory (eeprom or flash memory), an optical fiber device, and a portable compact disc read-only memory (cdrom). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for realizing a logic function for a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a programmable gate array (pga), a field programmable gate array (fpga), and the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware that is related to instructions of a program, and the program may be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (12)
1. An exception handling method for a vehicle-mounted positioning system is characterized by comprising the following steps:
receiving positioning information;
determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when the positioning information is determined to be abnormal, wherein the abnormal type comprises a first abnormal type and a second abnormal type, the first abnormal type is that the positioning is unsuccessful and the number of searched satellites is zero, and the second abnormal type is that the positioning is successful and the number of the searched satellites is zero;
when the positioning information is of a first abnormal type, restarting the positioning service of the system after a first preset time length; or
And when the positioning information is of a second abnormal type, directly restarting the positioning service of the system.
2. The method of claim 1, wherein receiving positioning information comprises:
acquiring satellite information through a positioning chip;
analyzing positioning information corresponding to the satellite information through a positioning engine;
receiving the positioning information through a system framework layer.
3. The method of claim 1, further comprising:
after the positioning service of the system is restarted after a first preset duration, judging whether the abnormity of the positioning information is successfully processed;
and if the abnormal processing of the positioning information is not successful, restarting the driving of the positioning engine after a second preset time length.
4. The method of claim 1, further comprising:
after the positioning service of the system is directly restarted, judging whether the abnormity of the positioning information is successfully processed;
and if the exception processing of the positioning information is not successful, directly restarting the driving of the positioning engine.
5. The method of claim 2, further comprising:
calling the system framework layer through a system interface before searching satellite information through a positioning chip;
calling an interface of the positioning engine through the system framework layer to start the positioning engine;
and sending a satellite searching instruction to the positioning chip through the positioning engine so that the positioning chip acquires the satellite information according to the satellite searching instruction.
6. An abnormality processing device for a vehicle-mounted positioning system, comprising:
the receiving module is used for receiving positioning information;
the determining module is used for determining whether the received positioning information is abnormal or not, and further determining the abnormal type of the positioning information when the positioning information is determined to be abnormal, wherein the abnormal type comprises a first abnormal type and a second abnormal type, the first abnormal type is unsuccessful in positioning and zero in the number of searched satellites, and the second abnormal type is successful in positioning and zero in the number of searched satellites;
the first processing module is used for restarting the positioning service of the system after a first preset time when the positioning information is of a first abnormal type;
and the second processing module is used for directly restarting the positioning service of the system when the positioning information is of a second abnormal type.
7. The apparatus of claim 6, wherein the receiving module is to:
acquiring satellite information through a positioning chip;
analyzing positioning information corresponding to the satellite information through a positioning engine;
receiving the positioning information through a system framework layer.
8. The apparatus of claim 6, wherein the first processing module is further configured to:
after the positioning service of the system is restarted after a first preset duration, judging whether the abnormity of the positioning information is successfully processed;
and if the abnormal processing of the positioning information is not successful, restarting the driving of the positioning engine after a second preset time length.
9. The apparatus of claim 6, wherein the second processing module is further configured to:
after the positioning service of the system is directly restarted, judging whether the abnormity of the positioning information is successfully processed;
and if the exception processing of the positioning information is not successful, directly restarting the driving of the positioning engine.
10. The apparatus of claim 7, wherein the apparatus further comprises:
the starting module is used for calling the system framework layer through a system interface before searching satellite information through a positioning chip, calling the interface of the positioning engine through the system framework layer to start the positioning engine, and sending a satellite searching instruction to the positioning chip through the positioning engine so that the positioning chip obtains the satellite information according to the satellite searching instruction.
11. A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements an exception handling method of the in-vehicle positioning system of any one of claims 1 to 5.
12. An in-vehicle terminal comprising an in-vehicle positioning system for implementing the method of exception handling for the in-vehicle positioning system of any of claims 1-5.
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| CN104236579B (en) * | 2014-10-09 | 2016-06-08 | 武汉大学 | A kind of based on Android inner nuclear layer realization high accuracy satellite navigation locating method |
| CN205450662U (en) * | 2016-01-05 | 2016-08-10 | 北京卓识达软件有限公司 | Automobile -mounted terminal's dormancy system and automobile -mounted terminal |
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